Belt-stretcher



W. R. WATERS.

BELT STRETCHER.

APPLlcATloN FILED um. 13. 192x.

1,396,806, Patented Nov. 8, 1921.

w f1 770,? A/Ey UNITED STATES WILLIAM R. WATERS, OF DAVENPORT, IOWA.

BELT-STRETCHER.

Application filed January 13, 1921.

To all inkom it may Concern:

Be it lniown that I, WILLIAM R. lVii'rnns, a. citizen of the United States, residing at Davenport, in the county of Scott and State of Iowa, have invented certain new and useful Improvements in Belt Stretchers, of which the following is a specification.

My invention pertains to devices for stretching power transmission belting, and is similar in character to the tool shown in my application for Letters Patent of the United States filed January 3rd, 1921, Serial No. 434,588. The purpose of the present iiivention is to simplify the device, and reduce the number of parts which it is necessary to handle in operating the same.

The device consists of a. set, or pair of clamping devices, which are capable of being quickly applied to two ends or part-s of apiece of belting, and means for bringing the clamping devices toward each other so as to bring the two parts of belting together, and hold them in approximate position while the same are being unit-ed.

The various features and advantages of the invention will be more fully understood from the following specification, reference being had to the accompanying dra-wings, in which: l

Figure 1 shows the invention in side elevation, in position when in use.

Fig. 2 is a plan view of one of the clamping devices with the handle broken away.

Fig. 3 is a detail of the coupling plate 22.

rlhe invention comprises a. pair of frames, each formed of a. clamp-plate 1, a.. plate 2 spaced therefrom in parallel relation, and an end plate 3 uniting said plate at one of their ends. Said plates are respectively reinforced by webs 4, 5, and 6. Centrally of each of the plates 2 is a barrel 7, threaded interiorly to receive the similarly threaded portion of a handle 8, provided at; its outer end with a4 hand grip 9. The inner end of the handles S have pivotal connections with clamping members 10, disposed in opposition to the plates 1. When the handles 8 are suitably rotated the plates 10 are moved in the direction ofthe plates 1, enabling a piece of belting to be grasped between the plates 10 and 1 and held tightly thereby, such belting being indicated at 11 and 12 in Fig. 1.

`One of the plates 1 is provided on its outer face with a. projection 13, to the end of which is attached a chain 14, the other end of said Specification of Letters Patent.

Patented Nov. 8, 1921.

Serial No. 436,945.

chain being connected with a button 15 on the end of a projection 16 on the other plate l. Each of the clamping tools thus forms a. lever the fulci'um of which is the connecting point between the projection and chain. and the movement of the outer ends of the handles toward each other will operate to dra-w the ends of the belting into juxtaposition, in which position they canbe held until they are fastened together. It will be obvious that by having a chain 14 of suitable length the clamping frames can be adjusted in position with relation to each other.

The frames are positioned on the belting by slipping the frame into place thereon from the side, the belt entering the open end of the frame. After the belting has been splaced the frames are detached by a rever sal of this movement. The open ends of the frames are adapted to be closed by latches 17, hinged at one side to the plate 1, and recessed at the other side so as to engage with projections 18 on the plates 2. Then the latches are closed they not only prevent accidental release of the clamp from the belt, but they act as a brace to prevent the ends of the plates 1 and 2 from spreading which might be occasioned by the strain resulting from the clamping operation. f A

The plate 10 is held from turning with the handle 8 by means of tongues on the ends thereof entering grooves 19 and 20 in the inner faces of the latch 17 and end-plate 3, respectively, such grooves acting as guides for the tongues.

IVhen the ends of the belting have been brought into the desired relation for being united the ends of the handles 8 can be held from movement by means of buttons 21 on the ends of said handles, to one of which buttons is secured a plate 22, by means of an opening 23 therein, the other end of said plate being provided with a series of holes 24 for alternative engagement with the button 21 on the opposite handle.

What I claim and desire to secure by Letters Patent, is:

1. A device of the class described, comprising a pair of frames, each open at one of its ends; clamping devices movable in said frame, adapted to coperate with one of the sides thereof; hand-levers supported in said frames, connected with said clamping members, so as to bring the same into clamping relations; fulcrum devices projected from said frames; and means for connection of said fulcrum devices, to form a leverage for said hand-levers.

2. A device of the class described, comprising a pair of frames, each open at one of its ends; clamping members movable in said frames, adapted to cooperate with one of the sides thereof; hand-levers supported in said frames, connected With said clamping members, so as to impart movement thereto, to bring the same into clamping position; fulcrum devices projected from said frames oppositely to said levers; and means of connection between said fulcrum devices permitting an adjustment of said frames with relation to each other.

3. A device of the class described, comprising a pair of rectangular frames, each open at one of its ends; hand-levers supported in one side of said frames so as to be capable of longitudinal movement therein; clamping members on the inner ends of said hand-levers, adapted to coperate With those sides of the frames opposite to the sides in which said levers are supported; projections on said frames disposed in a direction opposite to said hand-levers; and a chain attached to one of said projections and adapted to be releasably connected With the other projection.

4. A device ofthe class described, comprising a pair of frames, each open at one of its ends; clamping members movable in said frames, adapted to coperate With Vone of the sides thereof; hand-levers supported in said frames and operatively connected with said clamping members, so as to bring the same into a clamping position; fulcrum devices projected from said frames; means of connection between said fulcrum devices; and means for closing the open ends of said frames.

5..,A device of the class described, comprising a pair of frames; each open at one of its ends; clamping members movable in said frames, adapted to coperate With one of the sides thereof; hand-levers supported in said frames and operatively connected With said clamping members, so as to bring the same into clamping positions; fulcrum devices projected from said frames; means of connection between said fulcrum devices; and latch devices hinged at one side of said frames, adapted to close the open ends thereof and form a brace therefor.

6. A device of theclass described, comprising a pair of rectangular frames, each open at one of its ends; clamping members movable in said frames and adapted to cooperate with one of the sides thereof; handlevers connected with said clamping members, and operable in said frames, to suitably actuate said clamping members; fulcrum devices projected from said frames; means of connection between said fulcrum devices; and means for holding the ends of said hand-levers in adjusted positions With relation to each other.

7. In a device of the class described, a rectangular frame open at one of its ends, one of the sides thereof forming a clamping member; a hand-lever having a threaded engagement with the opposite side of said frame, so as to receive movement longitudinally upon being rotated; a clamping member pivoted on the inner end of said Y hand-lever; and a projection on said frame,

disposed oppositely to said hand-lever, adapt-ed for usel as a fulcrum therefor.

8. In a device ofthe class described, a frame open at one of its ends, one side thereof forming a clamping member; a handlever in operative engagement with the opposite side of said frame, so as to receive movement longitudinally upon being suitably actuated; a clamping memberY on the inner end of said hand-lever, inropposition to said iirstnamed clamping member; a closure for the open end of said frame, forming a brace therefor; and a fulcrum device on said frame, disposed in a direction opposite to that of said hand-lever.

In testimony whereof I affix my signature.

WILLIAM B VWA'IER-S. 

